NYT
Depending on whom you ask, the answer to this question is either one of the great myths of exercise or one of the great unappreciated truths: Is there an afterburn effect from a workout?
Whether the metabolism speeds up for hours after exercise an old question, first studied a century ago, and over the years, study after study has been carried out, with decidedly mixed results. Some investigators found no post-exercise effect. Others reported effects so small they were almost unnoticeable — one found male triathletes burned just 12 to 30 extra calories after a workout. Others found as many as 700 additional calories were burned after a long and exhausting exercise session.
The latest sally comes in a recent paper in the journal Medicine & Science in Sports & Exercise. Its lead author, Amy A. Knab of Appalachian State University, says it trumps studies that preceded it because of its careful design. And its results are good news — sort of.
Dr. Knab and her colleagues recruited 10 men, ages 22 to 33, who agreed to spend two periods of 24 hours each in a metabolic chamber, a small room that measures the calories people burn while they are inside. The men were not all athletes, but they did have to be able to ride a bike vigorously.
(More here.)
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